JP5960977B2 - Fire door - Google Patents

Description

  The present invention relates to a fire door.

In order to enhance fire performance in buildings, entrance doors and the like may be configured as fire doors.
Incidentally, the fire door is provided with parts such as a handle and a lock. These parts form a through hole in the door body (face material), and are attached to the door body using the through hole. For this reason, when a fire occurs in one of the two spaces partitioned by the fire door, smoke and flame are transmitted to the other space partitioned by the fire door through the through hole, causing fire spread.

  In order to prevent the spread of fire due to the through-holes for attaching the door parts, a material in which a thermal foam material is filled between the escutcheon plate covering the opening of the through-hole of the door body and the door body has been proposed (see Patent Document 1). ).

Japanese Utility Model Publication No. 7-12627

However, in the structure described in Patent Document 1, it is necessary to provide an escutcheon plate on the surface of the door body. For this reason, restrictions arise in the design of a door, and when a simple door design is calculated | required, there exists a problem of spoiling a design.
Moreover, since the structure of patent document 1 closes the gap | interval of an escutcheon plate and a door main body with the said thermal foaming material, when components, such as a handle and a lock | rock, melt | dissolve by fire and it loses from the said through-hole, However, even if the gap is closed with a thermal foam material, there is a problem in that fire spread occurs through the through-holes and fire prevention performance is lowered.

  An object of the present invention is to provide a fire door that can enhance fire prevention performance without impairing the design of the door.

The fire door of the present invention has a support surface that is parallel to the axial direction of the through hole for component placement that penetrates the door, and a heating portion that is bonded to the support surface of the support portion. A foam material, and the heated foam material is configured to expand when heated to a predetermined temperature or more so as to close the through hole in a component missing state , and the door includes a frame material and the frame material. Each of the face materials is formed with the through hole, and the support portion includes an indoor side support portion and an outdoor side support portion disposed between the face materials. The heating foam materials bonded to the indoor side support portion and the outdoor side support portion are spaced apart from each other in the axial direction of the through hole .

According to the present invention, since the heating foam material that closes the through-hole for arranging the parts of the door in the event of a fire is bonded to the support surface provided in the door , There is no need to provide it. For this reason, the fireproof performance of a fireproof door can be improved, without reducing the designability.
In addition, the heated foam material expands and closes the through-hole when heated above a predetermined temperature, so even if parts such as handles and locks melt and are lost from the through-hole, only the heated foam material is used. The through hole can be closed. For this reason, fireproof performance can be improved further.

  Further, in the fire door of the present invention, the support portion is composed of a pair of plate portions provided with the through hole interposed therebetween, and the support surfaces of the plate portions are provided to face each other, and the heating foam material Are bonded to each supporting surface, and when they are heated to a predetermined temperature or more, they preferably contact with each other by expanding in directions close to each other to close the through hole.

  According to this invention, a support part is comprised by a pair of board part provided on both sides of the through-hole, the support surfaces of each board part are mutually opposed, and the heating foam material is adhere | attached on this support surface. For this reason, the heated foam materials expand in directions close to each other, and come into contact with each other at a substantially intermediate position between the support surfaces arranged to face each other. For this reason, if the foaming (expansion) characteristic in one direction of the heating foam material is grasped, it is possible to accurately grasp how much the heating foam material expands at what temperature. Therefore, the through hole can be reliably closed when heated to a predetermined temperature.

  In the fire door of the present invention, the support portion is provided with the through hole interposed therebetween, and is provided with a pair of vertical plate portions extending along the vertical direction, with the through hole interposed therebetween, and A pair of horizontal plate portions extending along the horizontal direction, the support surfaces of the vertical plate portions are provided facing each other, the support surfaces of the horizontal plate portions are opposed to each other, and the vertical plate Provided perpendicular to the support surface of the plate portion, the heated foam material is bonded to each support surface, and the heated foam materials arranged opposite to each other when heated to a predetermined temperature or more expand in a direction close to each other. It is preferable that the through hole is closed by abutting.

According to the present invention, the support portion is constituted by a pair of vertical plate portions and a pair of horizontal plate portions, and is formed in a rectangular frame shape surrounding the periphery of the through hole. For this reason, the heating foam material adhere | attached on the support surface of a support part is also arrange | positioned at rectangular frame shape.
Therefore, the through-hole is closed by a heating foam material that is heated to a predetermined temperature or more and expands from the top, bottom, left and right. For this reason, compared with the case where a through-hole is obstruct | occluded only with the heating foam material adhere | attached on two opposing support surfaces, a through-hole can be obstruct | occluded more reliably and a fireproof performance can be maintained stably.

  Furthermore, in the fire door of the present invention, the support part is constituted by a cylindrical part surrounding the periphery of the through hole, and the support surface of the support part is constituted by an inner peripheral surface of the cylindrical part, and the heating foam material Is preferably formed in a cylindrical shape, adhered to the support surface, and contacted by expanding toward the center of the cylindrical portion when heated to a predetermined temperature or higher to close the through hole.

  According to this invention, the support portion is formed of a cylindrical portion, and the heating foam material formed in a cylindrical shape is bonded to the support surface which is the inner peripheral surface thereof. For this reason, the heated foam material expands toward the center of the support portion and abuts with each other at the center portion. For this reason, if the foaming (expansion) characteristics of the heated foam material are grasped, it is possible to accurately grasp how much the heated foam material expands at what temperature. Therefore, the through hole can be reliably closed when heated to a predetermined temperature.

Further, in fire door of the present invention, the frame body are assembled in a rectangular shape, between before Symbol surfaces material, coupled to the frame member, and an opening communicating with the through hole for the component arrangement It is preferable that a connecting material having the structure is disposed, and the support portion is formed on the connecting material.

As the connecting material, for example, a U-shaped steel plate having a side surface portion arranged along each surface material and a connecting portion for connecting the side surface portions can be used.
According to this invention, since the connecting material connected to the frame material of the door is provided and the support portion is formed on the connecting material, the same face material as that of the conventional door can be used. Further, since the connecting material is provided for attaching the heating foam material, the support portion can be formed at an optimal position in accordance with the shape and size of the through hole formed in the door . Therefore, it is possible to reliably and efficiently close the through hole with the heating foam material bonded to the support surface of the support portion.

Further, the fire door of the present invention, the frame body are assembled in a rectangular shape, bent portion that is bent to the door inner side before Kinuki hole portion is formed, the support unit, the folding It is preferable that it is composed of a curved portion.

As the face material of the fire door, a fire-resistant face material such as a steel plate is used.
According to the present invention, the bent portion formed on the inner side of the door is formed in the through hole portion of the face material, and the support portion is configured by the bent portion. Therefore, the connecting material for providing the support portion There is no need to provide such parts. For this reason, the number of parts can be reduced and the cost of the fire door can be reduced.
Furthermore, if the bent portion of the face material is used as the support portion, the heating foam material can be disposed adjacent to the opening of the through hole in the face material on the outdoor side of the door or the face material on the indoor side. For this reason, since the through hole can be closed near the opening, the through hole of the door can be reliably closed regardless of whether a fire has occurred on the outdoor side of the door or a fire has occurred on the indoor side. Therefore, the fireproof performance of the fireproof door can be further improved.
The bent portion can be formed by, for example, drawing.

It is an inside view which shows the fire door which concerns on 1st Embodiment of this invention. It is the figure which notched a part which shows the principal part of the fire door of 1st Embodiment. It is a disassembled perspective view which shows the principal part of the fire door of 1st Embodiment. It is a plane sectional view showing the important section of the fire door of a 1st embodiment. It is a plane sectional view showing the important section of the fire door of a 1st embodiment. It is a plane sectional view showing an important section of a fire door concerning a 2nd embodiment of the present invention. It is a disassembled perspective view which shows the through-hole and heating foam material of 2nd Embodiment. It is a perspective view which shows the through-hole and heating foam material of 2nd Embodiment. It is a disassembled perspective view which shows the other through-hole and heating foam material of 2nd Embodiment. It is a perspective view which shows the other through-hole and heating foam material of 2nd Embodiment. It is a plane sectional view showing an important section of a fire door concerning a 3rd embodiment of the present invention. It is a disassembled perspective view which shows the principal part of the fire door of 3rd Embodiment. It is the figure which notched a part which shows the principal part of the fire door of the modification of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 1, an entrance door 1 as a fire door according to an embodiment of the present invention includes a frame body 2 fixed to an opening of an outer wall, and a door main body that is supported by the frame body 2 so as to be opened and closed. The door 3 is provided. The frame 2 is a general door frame having an upper frame, a lower frame, and left and right vertical frames.
In addition, FIG. 1 is a figure which shows the indoor surface of the entrance door 1, The left side of FIG. 1 is made into the suspending side, the hinge which is not shown in figure is attached, and the right side of FIG. . On the door end side, a thumb turn 4 for opening and closing the two upper and lower cylinder locks and a handle 5 disposed between the thumb turns 4 are provided. Although not shown, a door guard, a door closer, and the like are also provided.

As shown in FIG. 2, the door 3 that is a door body is fixed to the frame member 10, a metal panel (face material) 21 fixed to the indoor side of the frame member 10, and the outdoor side of the frame member 10. A metal panel (face material) 22 and a paper honeycomb filler 23 filled between the panels 21 and 22 are provided. The filling material 23 filled between the panels 21 and 22 is not limited to the above-described material. Specific examples include materials such as honeycomb materials (aluminum hydroxide honeycomb, ceramic honeycomb), EPS (foamed bead method polystyrene), foam materials (isocyanurate foam, urethane foam, phenol resin foam).
The frame member 10 has a vertical bone 11 on the door end side, a vertical bone (not shown) on the hanging side (the hinge side), an upper bone (not shown), and a lower bone (not shown) in a rectangular shape. It is a frame material for a general door constructed by assembling.
Each of these aggregates (longitudinal bone 11 and the like) is composed of a channel material having a U-shaped cross section, as shown in FIGS. As the material of the channel material, for example, a hot dip galvanized steel sheet such as SGHC (hot rolled material) or SGCC (cold rolled material) can be used.

The panels 21 and 22 fixed to the indoor side and the outdoor side of the frame member 10 are formed with through holes 24 and 25 formed in portions where the thumb turn 4 and the handle 5 are attached.
The through hole 24 is a through hole in which the thumb turn 4 and the cylinder lock are arranged, and is a circular through hole. The through holes 24 are formed at two locations on the upper side and the lower side of the handle 5.
The through holes 25 are substantially cross-shaped through holes formed at two locations corresponding to the attachment position of the handle 5. Of the two through holes 25, the upper through hole 25 is provided with an attachment shaft (boss) or a latch lever on the upper side of the handle 5. In addition, an attachment shaft (boss) on the lower side of the handle 5 is disposed in the lower through hole 25.

A connecting member 30 is connected to the inside of the longitudinal bone 11. The connecting member 30 is formed of a channel member having a U-shaped cross section made of SGHC, SGCC, or the like, similar to the longitudinal bone 11. That is, the connecting member 30 includes two side portions 31 arranged along the panels 21 and 22 of the front door 1 and a connecting portion 32 that connects the side portions 31, and the plane cross section is formed in a U shape. Has been.
As shown in FIG. 3, the connecting member 30 is attached to the longitudinal bone 11 via a connecting member 33 fixed to the upper end portion and the lower end portion. In addition, the connection member 33, the vertical bone 11, and the connection material 30 are being fixed using the dish rivet etc. which are not shown in figure.

Openings 34 and 35 are formed in the side surface portion 31 of the connecting member 30 corresponding to the positions of the through holes 24 and 25. These openings 34 and 35 are rectangular openings formed by pressing or the like. Bending portions 34 </ b> A and 35 </ b> A that are bent inside the connecting material 30 are formed on the side surfaces of the openings 34 and 35 on the longitudinal bone 11 side.
As shown in FIG. 4, since the width dimension of the opening 34 is larger than the width dimension of the opening 35, the formation positions of the bent portion 34A and the bent portion 35A are also shifted.

A heating foam 40 is a double-sided tape on the surface of the bent portions 34A, 35A on the connecting portion 32 side (the surface on the opening 34, 35 side) and on the surface of the connecting portion 32 facing the bent portions 34A, 35A. Etc. are pasted.
Accordingly, the connecting portion 32 and the bent portions 34A, 35A constitute the support portion (plate portion, vertical plate portion) of the present invention, and the support surface of the present invention is formed by the opposing surfaces of the connecting portion 32 and the bent portions 34A, 35A. A surface is constructed. This support surface is a surface parallel to the axial direction of the through holes 24 and 25. In addition, since the surface parallel to the axial direction of the through-holes 24 and 25 should just be a surface which can mutually contact the heating foam 40 which thermally expands in a orthogonal direction with respect to a support surface, it is substantially parallel. It also includes the surface.
Further, the openings 34 and 35 corresponding to the through holes 24 and 25 have a width dimension larger than the width dimension of the through hole, and the connecting part 32 and the bent parts 34A and 35A are disposed outside the through hole 24. Has been.

The heated foam material 40 is made of thermally expandable graphite that expands at a predetermined temperature, and has a foaming ratio of 10 times or more (for example, 30 times).
And when heat is applied by a fire or the like, the heating foam 40 attached to the bent portions 34A and 35A and the heating foam 40 attached to the connecting portion 32 expand in a direction approaching each other, The openings 34 and 35 are provided so as to contact each other at the intermediate point.

Openings 14 and 15 are formed in the longitudinal bone 11. The opening 14 is formed at a height position where the thumb turn 4 and the cylinder are arranged, and is an opening for arranging a lock case (not shown).
The opening 15 is formed at a height position where the boss and the latch lever on the upper side of the handle 5 are arranged, and is an opening for arranging a latch case (not shown).

  In the connecting member 30, neither a latch case nor a lock case is disposed in the opening 35 portion below the handle 5. For this reason, the reinforcing member 38 bent in a substantially U-shaped cross section is fixed to the connecting portion 32 of the connecting member 30 with a rivet or the like. According to this configuration, since the heat-expandable graphite can be disposed on the four sides of the opening 35, the heat-expandable graphite can be closely expanded in the reinforcing member 38 to seal the opening 35.

In such an embodiment, when a fire occurs on the outdoor side of the front door 1 and the heating foam 40 is heated to a predetermined temperature or more, the heating foam 40 is thermally expanded as shown in FIG. Opposing heating foams 40 abut against each other. For this reason, the through holes 24 and 25 formed in the panel 22 on the outdoor side of the front door 1 are closed by the heating foam material 40. Similarly, when a fire occurs on the indoor side of the front door 1, the heating foam material 40 is thermally expanded, and the through holes 24 and 25 formed in the panel 21 on the indoor side are closed by the heating foam material 40.
In this way, the heating foams 40 abut against each other to close the through holes 24 and 25, so that not only the case such as the thumb turn 4, cylinder, lock case, handle 5, latch case remain, but these Even if the parts melt or are missing, the flame shielding effect can be maintained. Therefore, the entrance door 1 with high fire resistance can be provided.

  Further, since the heating foam material 40 is provided in a pair on the support surfaces facing each other of the bent portions 34A, 35A and the connecting portion 32, the through-hole 24, compared to the case where the heating foam material 40 is provided only on one side. 25 can be closed quickly. Moreover, since the heat-expanding heating foam materials 40 are brought into contact with each other to close the through holes 24 and 25, no gap is generated between the heating foam materials 40, and stable flame shielding performance can be ensured. For this reason, even if some variation occurs in the mounting position of the heating foam material 40 and the bending angle of the bent portions 34A, 35A, by bringing the heating foam materials 40 that are thermally expanded into contact with each other, the variation can be absorbed, Stable flameproof performance can be secured.

Further, since the heating foam material 40 is attached to the connecting material 30 disposed between the panels 21 and 22 of the entrance door 1, the heating foam material 40 and the like are shielded on the surface side of the panels 21 and 22 of the entrance door 1. The flame member is not exposed. That is, it is not necessary to arrange an escutcheon plate as in Patent Document 1 on the surface side of the panels 21 and 22.
For this reason, the design of the entrance door 1 is not damaged by the flame shielding parts. In particular, since the entrance door 1 is required to have design properties, it is advantageous in that the design properties can be improved so that the flame shielding parts need not be exposed to the outside.

  In addition, in this embodiment, the circular through hole 24 and the substantially cross-shaped through hole 25 are provided with through holes 24 and 25 having different sizes and shapes, but the heating foam 40 is provided between the panels 21 and 22. Since it is arranged (inside the front door 1), it can be installed at any position and size according to the through holes 24 and 25. For this reason, the flame shielding performance can be reliably ensured even for large and small through holes.

[Second Embodiment]
The second embodiment of the present invention is substantially the same as the first embodiment except that the connecting member 30 in the first embodiment is not provided and the heating foam is attached to the panel. Hereinafter, the difference will be described in detail with reference to FIGS.

As shown in FIG. 6, the front door 1A of the second embodiment includes a frame and a door 3A (not shown). The door 3A includes a frame member 10 such as a longitudinal bone 11 and panels 21A and 22A.
A lock case and a latch case 50 are arranged between the panels 21A and 22A and are fixed to the longitudinal bone 11 as in the first embodiment.
The handle 5 includes an outdoor handle 5A and an indoor handle 5B, and is attached to the panels 21A and 22A by screwing screws 52 into the mounting shaft 51 formed on the handle 5A via the handle 5B. ing. The mounting shaft 51 and the screw 52 are received as a pair above and below the latch case 50.

As shown in FIGS. 7 to 10, the panels 21 </ b> A and 22 </ b> A of the second embodiment are formed by forming through holes 24 </ b> A and 25 </ b> A by press punching, and bending the periphery of the holes by drawing. The parts 241 and 251 are formed.
For example, as shown in FIG. 7, a rectangular through hole 25A in which the latch case 50 is disposed has a bent portion 251 formed by drawing along the outer periphery of the through hole 25A. Note that the bent portions 251 are separated from each other when the through hole 25A is formed by punching so that the bent portions 251 can be easily bent at the time of drawing.
As shown in FIG. 8, the heating foam 40A bent into a rectangular frame shape is attached to the inner peripheral surface of the bent portion 251 with an adhesive or a double-sided tape.
Therefore, the bent portion 251 constitutes a support portion (plate portion) of the present invention, and the inner peripheral surface of the bent portion 251 constitutes a support surface. Further, among the four bent portions 251, the vertical plate portion is constituted by the left and right two bent portions 251 and the horizontal plate portion is constituted by the two upper and lower bent portions 251.

  When heat is applied to the heating foam 40A during a fire, the heating foam 40A expands thermally. At this time, since the heating foam material 40A is formed in a rectangular frame shape, the heating foam materials 40A attached to the opposed bent portions 251 expand in a direction approaching each other, and the heating foam materials 40A come into contact with each other. Thus, the through hole 25A is closed.

On the other hand, as shown in FIG. 9, the circular through hole 24A to which the thumb turn and the cylinder are mounted has a cylindrical bent portion 241 formed by drawing along the outer periphery of the through hole 24A.
As shown in FIG. 10, the heating foam 40B bent into a cylindrical shape is attached to the inner peripheral surface of the bent portion 241 with an adhesive or a double-sided tape.
Therefore, the bent portion 241 constitutes a support portion (cylindrical portion) of the present invention, and the inner peripheral surface of the bent portion 251 constitutes a support surface.
And since the inner peripheral surface of each bending part 241 and 251 becomes an outer peripheral surface of through-hole 24A, 25A, each bending part 241,251 which is a support part is arrange | positioned on the outer side of through-hole 24A, 25A. Yes. The inner peripheral surfaces (support surfaces) of the bent portions 241 and 251 are provided in parallel to the axial direction of the through holes 24A and 25A.

  When heat is applied to the heating foam 40B during a fire, the heating foam 40B expands thermally. At this time, since the heating foam material 40B is formed in a cylindrical shape, the opposed portions of the heating foam material 40B expand toward each other, that is, toward the center of the bent portion 241, and the heating foam materials 40B are in contact with each other. Through contact, the through hole 24A is closed.

Also in the second embodiment, the same effects as the first embodiment can be achieved.
Further, since the heating foam materials 40A and 40B are attached to the bent portions 241 and 251 formed on the panels 21A and 22A, the connecting material 30 of the first embodiment can be eliminated, the number of parts can be reduced, and the cost can be reduced. Can be reduced.

Moreover, since the continuous heating foam materials 40A and 40B are arranged around the through holes 24A and 25A, compared to the case where the heating foam material 40 is thermally expanded only from the left and right directions as in the first embodiment. The flame barrier performance can be stabilized.
Furthermore, since the heating foam materials 40A and 40B are attached to the bent portions 241 and 251 that divide the through holes 24A and 25A of the panels 21A and 22A, between the through holes 24A and 25A and the heating foam materials 40A and 40B. Thus, the through holes 24A and 25A can be reliably closed.

[Third Embodiment]
Although the third embodiment of the present invention is different in that a heating foam material is attached to the latch case 50 and the lock case, other configurations are substantially the same as those of the above embodiment. Hereinafter, the difference will be described in detail with reference to FIGS.

As shown in FIG. 11, the entrance door 1B of 3rd Embodiment is provided with the frame and door 3B which are not shown in figure. The door 3 </ b> B includes a frame member 10 such as a longitudinal bone 11 and panels 21 and 22. A lever handle 6 is attached to each panel 21, 22. For this reason, the through-hole 25 in which the lever handle 6 is disposed is formed only in one place in each of the panels 21 and 22.
Therefore, the lock case or the latch case 50 is necessarily disposed in the through holes 24 and 25 formed in the panels 21 and 22.

As in the first embodiment, a lock case and a latch case 50 are arranged between the panels 21 and 22 and are fixed to the longitudinal bone 11.
On both side surfaces of the case 50 facing the panels 21 and 22, holding plates 41 to which the heating foam material 40 is attached are attached. At this time, each holding plate 41 is attached to the case 50 with the heating foam material 40 facing each other.
Each holding plate 41 is formed with a claw portion 42 for attachment. The holding plate 41 is attached to the case 50 by hooking the claw portion 42 into a groove 53 formed on the side surface of the case 50.
Therefore, a support part (plate part) is comprised by the holding plate 41, and the support surface is comprised by the mutually opposing surface of the holding plate 41. FIG.

  These holding plates 41 are arranged at positions sandwiching the through holes 24, 25, that is, outside the through holes. When a fire occurs, the heating foam materials 40 arranged to face each other thermally expand in a direction approaching each other. The through holes 24 and 25 are closed by the contact of each other.

In the third embodiment, the same operational effects as those of the first embodiment can be obtained.
Moreover, since the heating foam material 40 is affixed on the holding plate 41 attached to the lock case or the latch case 50, it is not necessary to provide the connecting material 30 as in the first embodiment, and the component cost can be reduced. Furthermore, unlike the second embodiment, it is not necessary to form the bent portions 241 and 251 in the panels 21 and 22 by drawing, so that the processing cost can be reduced.

In addition, this invention is not limited to the said embodiment, Including other structures etc. which can achieve the objective of this invention, the deformation | transformation etc. which are shown below are also contained in this invention.
For example, although the entrance door 1 has been described as an example in the above embodiment, the fitting of the present invention is not limited to the entrance door 1 and may be a doorway door or the like, which is used to prevent the spread of fire. Applicable to fire doors.

In the first embodiment, the bent portions (vertical plate portions) 34A and 35A are provided on the side surfaces of the openings 34 and 35, and the through holes 24 and 25 are closed with the heating foam material 40 from the left and right directions. As shown in FIG. 13, bent portions (horizontal plate portions) 34B and 35B are provided on both upper and lower sides of the openings 34 and 35, and the heating foam 40 is attached to these bent portions 34B and 35B. The through holes 24 and 25 may be closed with the heating foam material 40 provided in the four directions of up and down and left and right.
In this case, compared with the case where the heating foam 40 is thermally expanded from only the left and right directions as in the first embodiment, the flame shielding performance can be stabilized.

  In addition, when thermally expanding the heating foam material 40 from two directions, the heating foam material 40 is thermally expanded in the vertical direction by providing the horizontal foam portions above and below the through holes 24 and 25 and arranging the heating foam material 40. You may let them.

In addition, the best configuration, method, and the like for carrying out the present invention have been disclosed in the above description, but the present invention is not limited to this. That is, the invention has been illustrated and described with particular reference to certain specific embodiments, but without departing from the spirit and scope of the invention, Various modifications can be made by those skilled in the art in terms of material, quantity, and other detailed configurations.
Therefore, the description limiting the shape, material, etc. disclosed above is an example for easy understanding of the present invention, and does not limit the present invention. The description by the name of the member which remove | excluded the limitation of one part or all of such restrictions is included in this invention.

  1, 1A, 1B ... Entrance door (fire door), 3, 3A, 3B ... Door (door body), 4 ... Thumb turn, 5 ... Handle, 6 ... Lever handle, 10 ... Frame material, 11 ... Longitudinal bone, 21 22, 21A, 22A ... Panel (surface material), 24, 25, 24A, 25A ... Through hole, 30 ... Connecting material, 34, 35 ... Opening, 34A, 35A, 34B, 35B, 241, 251 ... Bent part ( Support part), 40, 40A, 40B ... heated foam material, 41 ... holding plate (support part), 50 ... latch case.

Claims (6)

A support portion disposed inside the door having a support surface parallel to the axial direction of the through hole for component placement penetrating the door;
A heating foam bonded to the support surface of the support part,
The heated foam material is configured to expand when heated to a predetermined temperature or more so as to close the through hole in a component missing state ,
The door includes a frame member and a face member fixed to both sides of the frame member,
In each face material, the through hole is formed,
The support part has an indoor side support part and an outdoor side support part arranged between the face materials,
The fire-proof door , wherein the heating foam materials respectively bonded to the indoor-side support portion and the outdoor-side support portion are spaced apart in the axial direction of the through hole . The support portion is composed of a pair of plate portions provided with the through hole interposed therebetween,
The support surfaces of the plate portions are provided to face each other,
2. The heat foaming material is bonded to each support surface, and when heated to a predetermined temperature or higher, expands in a direction close to each other to contact and close the through hole. Fire door. The support portion is provided across the through-hole and extended along the vertical direction, and the support portion is provided across the through-hole and extended along the horizontal direction. It consists of a pair of horizontal plate parts,
The support surfaces of the vertical plate portions are provided facing each other,
The support surfaces of each horizontal plate portion are opposed to each other, and are provided orthogonal to the support surface of the vertical plate portion,
The heated foam material is bonded to each support surface, and the heated foam materials arranged to face each other when heated to a predetermined temperature or more are in contact with each other by expanding in directions close to each other, thereby closing the through hole. The fire door according to claim 1. The support portion is configured by a cylindrical portion surrounding the through hole,
The support surface of the support portion is configured by an inner peripheral surface of the cylindrical portion,
The heated foam material is formed in a cylindrical shape, adhered to the support surface, and abuts by expanding toward the center of the cylindrical portion when heated to a predetermined temperature or more to close the through hole. The fire door according to claim 1. The frame material is assembled in a rectangular shape,
Between each of the face materials, a connecting material connected to the frame material and having an opening communicating with the through hole for component placement is arranged,
The fireproof door according to any one of claims 1 to 4, wherein the support portion is formed on the connecting member. In the door, the frame member is assembled in a rectangular shape,
Bent portion that is bent to the door inner side is formed on the front Kinuki hole portion,
The fireproof door according to any one of claims 1 to 4, wherein the support portion includes the bent portion.

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